A body is thrown vertically up with some velocity at t 0 crosses a fixed point Pin its path at t 4 s and again at t 6 s The

Question

A body is thrown vertically up with some velocity at t 0 crosses a fixed point Pin its path at t 4 s and again at t 6 s The velocity of projection of the body will be O 20 m s O 50 m s O 10 m s 40 m s

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